Every vehicle leaving
any assembly line has gone through a precise design process to maximize intended performance while meeting regulations for mileage and emission standards. Of course new exhaust, Air Intake, wheel size, etc. are altering this balanced design configuration with after-market stuff.
When adding a free-flow intake and open exhaust, the air/fuel ratio must be altered to provide the intended fuel energy for the sought-after performance/acceleration gains. Fun is as designed; buy a performance car designed to get performance. Buy an econo-box designed to take advantage of the compromise between performance in order to save money at the gas pump.
The biggest BS put out on the street: buy an electric vehicle to eliminate emission release. There must be an exhaust pipe or exhaust stack at the electric power plant (unless it is Nuclear!) to supply your source of electricity. Wind Generators cannot provide a base-load reliable continuous source of electricity. The only regular constant wind source if the entity trying to bias your understanding. Due to electrical distribution losses, the end result is greater pollutant releases likely over a motor vehicle DESIGN exhaust outlet! There is more than one way to blow smoke up you environment.
Most modifications can be automatically adjusted for by the original installed sensors and designed PCM engine computer. Aggressive alteration will require a retune specific to the changes that exceed the manufacturers design goals. This "Master-of-the-Obvious" statement comes up against stoicometric design intent.
Why the Hell is it that the most complained about "problem" with Hummers is gas mileage. DUH!!!! Heavy work, off-road capability, large vehicle mass requires more fuel energy to perform the "DESIGN" functions. Not a surprise; just the facts. Shut the front door!
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Stephen P
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